Knowledge of prior unperfected security interests, or in the case of super-priority security interests such as PMSIs or security interests perfected by control, knowledge of other existing perfected security interests, in the same collateral, is generally not relevant to determining priority disputes under the PPSA.
The general rule is that secured parties can perfect at any time to obtain priority, whether or not they have knowledge of existing security interests that they will defeat by perfection. For example, a secured party can take a subsequent all-assets (general) security interest and register to defeat a prior retention of title security interest (ROTs will usually be PMSIs) that has not been registered and so is unperfected, even if they know about the prior unperfected retention of title security interest.
There are at least four cases under the PPSA where knowledge is relevant to priority disputes between security interests and other interests:
(a) creditors receiving payments of debts from ADI accounts or by negotiable instrument –
the creditor in question must have no actual knowledge that the payment was in breach of
the terms of security agreements governing security interests over the funds or the negotiable instrument – section 69;
(b) general law liens or statutory liens or charges that secure amounts outstanding from the provision of goods or services in the ordinary course of business (below, liens) – the lien holder must have no actual knowledge that the lien arising would breach the terms of a security agreement that governs a security interest over the collateral in question – section 73;
(c) upon transfers of collateral which do not extinguish security interests, new advances made by secured parties of the buyer and made before the original secured party of the seller re-perfects against the buyer, have priority provided the buyer had no actual or constructive knowledge that the acquisition would breach the terms of a security agreement governing a security interest over the collateral granted by the seller - section 68(2)(c). See the discussion at paragraph 18.16.1 to 18.16.26; and
(d) takers of interests in negotiable documents of title, negotiable instruments and chattel paper that are subject to a security interest have priority to the security interest provided (in broad terms) the buyer or investor1:
Notes:
1 PPSA section 70, 71, 72